← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 426 · 40 questions
TalentJR

The method (Use the structure): n consecutive numbers with sum S: the middle (average) is S ÷ n. From sum and difference: larger = (sum + difference) ÷ 2, smaller = (sum − difference) ÷ 2. Swapping the digits changes the number by 9 × (difference of the digits). “k times another, difference D”: smaller = D ÷ (k − 1).

NameDateTime takenScore ___ / 40
  1. 1.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 9. What is the number?
  2. 2.The sum of two numbers is 14 and their difference is 6. What is the smaller number?
  3. 3.The sum of 3 consecutive numbers is 174. What is the largest of them?
  4. 4.One number is 5 times another. Their difference is 56. What is the smaller number?
  5. 5.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  6. 6.One number is 5 times another. Their difference is 116. What is the smaller number?
  7. 7.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 54. What is the number?
  8. 8.The sum of 4 consecutive numbers is 202. What is the smallest of them?
  9. 9.The sum of 3 consecutive even numbers is 66. What is the smallest of them?
  10. 10.One number is 4 times another. Their difference is 84. What is the smaller number?
  11. 11.The sum of two numbers is 45 and their difference is 19. What is the smaller number?
  12. 12.The sum of two numbers is 46 and their difference is 26. What is the larger number?
  13. 13.The sum of 4 consecutive odd numbers is 88. What is the largest of them?
  14. 14.One number is 4 times another. Their difference is 102. What is the smaller number?
  15. 15.One number is 6 times another. Their difference is 180. What is the smaller number?
  16. 16.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 54. What is the number?
  17. 17.The sum of 4 consecutive numbers is 42. What is the largest of them?
  18. 18.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 63. What is the number?
  19. 19.The sum of 3 consecutive even numbers is 60. What is the smallest of them?
  20. 20.The sum of 3 consecutive even numbers is 192. What is the largest of them?
  21. 21.The sum of two numbers is 151 and their difference is 29. What is the smaller number?
  22. 22.The sum of 4 consecutive odd numbers is 192. What is the smallest of them?
  23. 23.The sum of 5 consecutive numbers is 50. What is the largest of them?
  24. 24.One number is 3 times another. Their difference is 56. What is the smaller number?
  25. 25.The sum of 4 consecutive numbers is 222. What is the largest of them?
  26. 26.The sum of 3 consecutive odd numbers is 165. What is the smallest of them?
  27. 27.The sum of 4 consecutive numbers is 98. What is the largest of them?
  28. 28.The sum of two numbers is 59 and their difference is 21. What is the smaller number?
  29. 29.The sum of 3 consecutive even numbers is 138. What is the smallest of them?
  30. 30.The sum of two numbers is 81 and their difference is 75. What is the larger number?
  31. 31.The sum of 4 consecutive even numbers is 204. What is the largest of them?
  32. 32.The sum of two numbers is 92 and their difference is 14. What is the smaller number?
  33. 33.The sum of two numbers is 50 and their difference is 26. What is the smaller number?
  34. 34.The sum of two numbers is 164 and their difference is 8. What is the larger number?
  35. 35.The sum of 4 consecutive odd numbers is 64. What is the smallest of them?
  36. 36.The sum of 5 consecutive numbers is 35. What is the smallest of them?
  37. 37.The sum of two numbers is 111 and their difference is 9. What is the smaller number?
  38. 38.The sum of 4 consecutive odd numbers is 240. What is the largest of them?
  39. 39.The sum of 4 consecutive even numbers is 92. What is the smallest of them?
  40. 40.The sum of two numbers is 53 and their difference is 17. What is the larger number?

Answer key

  1. 45
  2. 4
  3. 59
  4. 14
  5. 69
  6. 29
  7. 39
  8. 49
  9. 20
  10. 28
  11. 13
  12. 36
  13. 25
  14. 34
  15. 36
  16. 17
  17. 12
  18. 29
  19. 18
  20. 66
  21. 61
  22. 45
  23. 12
  24. 28
  25. 57
  26. 53
  27. 26
  28. 19
  29. 44
  30. 78
  31. 54
  32. 39
  33. 12
  34. 86
  35. 13
  36. 5
  37. 51
  38. 63
  39. 20
  40. 35

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude